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| author | Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com> | 2021-08-24 20:30:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-18 14:42:24 +0300 |
| commit | 9288b819b94169aa99134e15b6c23572b0b78cb2 (patch) | |
| tree | 0418ccebb189cd33ea7b07ad7011a65dd2774398 /.cocciconfig | |
| parent | e0a890ceb0af55258db6d48b5af297bca794f0fa (diff) | |
| download | linux-9288b819b94169aa99134e15b6c23572b0b78cb2.tar.xz | |
drm/panfrost: Use u64 for size in lock_region
commit a77b58825d7221d4a45c47881c35a47ba003aa73 upstream.
Mali virtual addresses are 48-bit. Use a u64 instead of size_t to ensure
we can express the "lock everything" condition as ~0ULL without
overflow. This code was silently broken on any platform where a size_t
is less than 48-bits; in particular, it was broken on 32-bit armv7
platforms which remain in use with panfrost. (Mainly RK3288)
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Suggested-by: Rob Herring <robh@kernel.org>
Tested-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Fixes: f3ba91228e8e ("drm/panfrost: Add initial panfrost driver")
Cc: <stable@vger.kernel.org>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210824173028.7528-3-alyssa.rosenzweig@collabora.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to '.cocciconfig')
0 files changed, 0 insertions, 0 deletions